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Exhaust Manifold leak

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Old 09-25-2008, 08:21 AM
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Default Exhaust Manifold leak

Hi all! Hate to make this my first post. . . . but I'm new here, so here goes.

I have a leak in my passenger side exhaust manifold. I'm hearing that distinct rush of air when she's cold, but when it warms up the sound goes away....as usual.

Could someone tell me how tough it is to change this manifold on an 02 Screw Lariat? I do most of my maintenance stuff myself, but leave the intricate or big jobs to the shop.... I was told last night by one of the guys at the shop that I go to that I'm looking at a $500 repair.....

Any help or point in the right direction would be much appreciated.
Old 09-25-2008, 10:16 PM
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Not a bad job just do it on a overnight cold motor and use a quality penetrating oil and pray a stud doesn't break off in the head. Some nuts will come off, some studs will come out, and a couple will break. Plan on replacing all 8 studs and nuts.
Old 10-29-2008, 05:15 PM
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is it tough to get at some of the nuts, and u said to plan on replacing the studs and nuts, are they expensive and where can u get them?
Old 10-29-2008, 06:56 PM
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Sounds exactly like my wifes 96 Explorer 5.0. Haven't done a thing, probably should have but didn't. So far at 120K, no problems or check engine light.
Old 10-30-2008, 04:38 PM
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How much truth is there to the rumor that failure to change the leaking exhaust manifold with cause the truck to fail emissions inspection?
Old 10-30-2008, 04:45 PM
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Wifes Explorer passed California emisions with the same ex leak everytime no problems. Your leak does dimminish when engine is warmed up, doesn't it? They test the vehicles at operating temps. As I say, with mine no problem.
Old 10-30-2008, 07:33 PM
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I had the same issue. so i took the manifold off and found the two rear stud bolts busted in the head. so i helicoiled it and slapped the manifold back on. everything worked fine for about a month then started leaking again. It turns out that the manifold had warped from the constant temperature changes. so i ended up getting some headers to replace them. all in all its not too hard to do but i recommend investing in some good ratchet wrenches.
Old 10-31-2008, 10:15 PM
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About how long did it take you to take the manifolds off and put the headers on?



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